Elevatob



NITED STATES PATE OFFICE..

SAMUEL MILLS, OF NFY YORK, N. Y., ASSIGNOR TO HIMSELF, AND F. FLANOK, OF

' SAN FRANCISCO, CALIFORNIA.

ELEVATOR AND LOCK FOR WINDOW-SASHES.

To all 'whom 'it may concern:

Be it known that I, SAMUEL MILLS, of the A city of New York, in the State of New York,

have invented certain new and useful Improvements in Vindow-Sash Elevators, in Combination with a SelfsAdjusting Lock; and the following is a clear and exact description of the same, reference being had to the accompanying drawings, making a part of this specification.

Figure l, shows a side elevation. Fig` 2, represents an edge View of window frame. Fig. 3, is the elevating and locking mechanism detached, enlarged view.

The nature of my invention consists in the application and arrangement of a supporting guide, a rack and pinion to raise and depress the sash, in combination with a stationary lock, and spring crank handle, by which the sash is elevated, and fastened securely at any, and every point it is placed, and left, without the action of the springs or balance weights.

To enable others skilled in the art, to make and use my invention, I will describe it referring to the drawings and the letters marked thereon.

(A, A,) in Figs. l, and 2, is a common window frame, made and set in the ordinary manner of any size, and style desired, into which is tted the sash (13,) made to slide up, or down in the grooves (1),) formed by the casings (a, a,) in the usual manner.

At the top corners of the sash (13,) is secured to the edge a plate of metal (6,) projecting out from the sash sucient distance to form a support to the top of the sash, to prevent it from sagging and causing it to bind and stick against the opposite side of the frame, which is accomplished in a very simple and eiiicient manner, by having a rabbet (0,) cut on the under corner of one of the inside casings (La) for the metal plate (6,) to slide in, as the sash is moved up or down.

In one side of the sash (13,) is fitted a rack ((3,) having strong deep cogs (d, d, d,), made of cast metal, the ends of the cogs being ush with the edge of the sash-which zovs it to move smoothly in the groove At about the center of the frame (A,) on either side of the window as may bedesired, I place a cog-wheel, or a pinion (E,)

so as to mesh into the rack (0,), the pinion (E,) being fitted onto a shaft, or arbor (6,) of su icient length to extend from the groove (D,) to the surface of the inside casing on the frame (A,) where a peculiarly constructed spring crank (H,) is fitted, which operates as a lock to fasten the sash in any position in which it may be placed, as will be hereafter more fully described. On the face of the inside casing, is fastened a plate of metal (F,) which forms the journal boX, or bearing, for the pinion shaft (6,), the plate (F,) being made with notches on the periphery like a cog-wheel, or it may be made with a series of holes in the disk close to each other, forming a circle near the edge, into which holes, or notches (76,) a pin, or projecting stud is fitted, so as to enter freely, the pin, or stud being attached to the under side of the spring crank handle (H,), which is connected to the pinion shaft (6,) and thereby locks the pinion and holds the sash firmly. The crank handle I-I,) is hinged to a long Hat piece of metal I,) having on its underside at one end a protuberance (c',) to pivot the movable crank pin (H,) to, on the end of which is a knob, or handle (J,) to take hold of, to raise or let down the sash. The piece (I,) and crank (IL) may be made of any length, so as to form as much leverage as is necessary to raise and lower the sash with ease according to its size and heft. To the piece (I,) is fastened a. flat s ring (7,) which extends under the piece and bearing outward on it, opposite the knob (J so as always to keep the stud (f,) locked in the plate (F,) when it is not pressed upon, for the purpose of raising or owering the sash.

It is acceded to by all that there are more and greater advantages derived by my invention than all of the improvements in elevating and fastening window sash put together that have preceded it, a few of which I will here enumerate, as follows: There is no handling of the sash; the top, or bottom sash, can be moved either way, without opening the inside blind shutter, or disturbing the drapery; there is no danger of accident` by the sash falling, or being opened by small children; there are no springs, pulleys, cords, or weights to get broken, or deranged, so as to cease to per- 10 in combination With the spring-crankhandle and catch; by which the sash is elevated, or depressed, and is safely secured in the position it is left, (from the hand,) substantially as specified, for the purposes herein set forth.

SAMUEL MILLS.

Vitnesses J. B. WooDRUFF, Hosen MILLS. 

